* {
	padding: 0;
	margin: 0;
	box-sizing: border-box;
	text-decoration: none;
}

.header {
	width: 100%;
	height: 70px;
	line-height: 70px;
	background: lightcoral;
	font-size: 24px;
	font-family: "微软雅黑";
}

.main {
	display: -moz-box;
	display: -webkit-box;
	display: -ms-flexbox;
	display: -webkit-flex;
	display: flex;
	-webkit-flex-flow: col wrap;
	justify-content: space-around;
}

section {
	width: 15%;
	height: auto;
}

.ul-nav {
	display: -moz-box;
	display: -webkit-box;
	display: -ms-flexbox;
	display: -webkit-flex;
	display: flex;
	-webkit-flex-flow: row wrap;
	justify-content: space-around;
}

.ul-nav li {
	list-style: none;
	background: lightskyblue;
	padding: 5px;
	width: 100%;
	height: 50px;
	border-bottom: 1px solid #FFFFFF;
	line-height: 50px;
	color: white;
	font-weight: bold;
	font-size: 16px;
	text-align: center;
}

.ul-nav li.li-nav img {
	width: 35px;
	height: 35px;
	float: right;
	right: 5px;
	margin-top: 7px;
	display: none;
}

.ul-nav li.li-nav.on img {
	display: inline-block;
}

.ul-nav li:hover {
	background: pink;
	cursor: pointer;
}

.ul-nav li:active {
	background: lightblue;
}

aside {
	width: 85%;
	height: auto;
}

aside div {
	background: lightblue;
	font-size: 16px;
	font-family: "微软雅黑";
	display: none;
}

aside div:first-child {
	display: block;
}

table {
	width: 100%;
	height: auto;
	border: 1px solid #eee;
	border-bottom: 0;
	/*如果容器是table，当文字内容过多时不换行，而是出现省略号...*/
	table-layout: fixed;
	/*1.一定要给table定义table-layout:fixed;只有定义了表格的布局算法为fixed,下面的td的定义才能生效*/
}

th,
td {
	border: 1px solid #eee;
	border-top: 0;
	text-align: center;
	padding: 2px 3px;
	/*2.下面的三个同样不能少*/
	overflow: hidden;
	text-overflow: ellipsis;
	white-space: nowrap;
}

.ul-nav li.li-list {
	height: auto;
	width: 100%;
	padding: 0;
	margin: 0;
	display: none;
}

.ul-nav li.li-list:active {
	background: #EEEEEE;
}

.li-list li {
	background: #B0C4DE;
}

.li-list li:hover {
	background: #EEEEEE;
}

.li-list li:active {
	background: #EEEEEE;
}